全程跟单是指“跟”到货款到账，合同履行完毕为止。

 To gain a bigger _______ internationally, many companies are striving to make their products more competitive.

A．hold

B．share

C．interest

D．part

In relation to the Vietnamese legal system:

(a) List the persons and bodies that are entitled to submit draft laws to the National Assembly. (2 marks)

开展窝沟封闭防龋措施的临床操作过程中

酸蚀牙面步骤中不应将酸蚀剂

A．接触牙面上

B．溢到软组织

C．放在乳牙上

D．放到恒牙上

E．蘸到细毛刷上

对于聚酰胺—66的注射制品，为改善和提高制品的性能，通常需进行的后处理有（）。

A、退火与调湿

B、调湿与淬火

C、淬火与调质

D、调质

简述计算机绘图基本知识。